a16z’s Alex Immerman on How AI Is Redefining the Modern CFO | Mostly Classics

[Original air date: June 19, 2025]In this episode, Alex Immerman, partner at Andreessen Horowitz, joins CJ to discuss the CFO role and how it’s changing in the era of AI. He explains what the components of a company’s AI agenda the CFO should own, how and where it should be leveraged in an organization, and why, if you’re preparing to go public, AI needs to be mentioned in your S-1. He breaks down how the financial landscape differs greatly between AI-native SaaS companies and traditional B2B SaaS companies in terms of retention curves and gross margins, and how this relates to the ever-important LTV to CAC metric. As someone who has worked with prominent CFOs and interviewed many for a16z’s portfolio companies, Alex also describes the qualities of a great CFO, and shares his favorite interview question, before discussing CFOs, CEO, and board dynamics.—LINKS:Alex Immerman on LinkedIn: https://www.linkedin.com/in/immermanAndreessen Horowitz: https://a16z.comCJ on LinkedIn: https://www.linkedin.com/in/cj-gustafson-13140948/Mostly metrics: https://www.mostlymetrics.com—RELATED EPISODES:a16z’s Alex Immerman on the Evolving Role of the CFO in the Age of AIhttps://youtu.be/JIvHp-mlnzsSo You’re Looking for a “Strategic” CFO? Bloomerang’s Steve Isom on What That Really Meanshttps://www.youtube.com/watch?v=cgHOtvG1Ces—TIMESTAMPS:00:00:00 Preview and Intro00:01:46 AI Margins Improve Dramatically00:02:29 What Separates Great CFOs00:03:29 Founder Mindset Drives Performance00:05:31 Founder Intensity and Margin Expansion00:06:57 Backing Unproven Bets Thoughtfully00:08:29 Interviewing CFOs for Backbone00:09:55 When CFOs Push Back on Strategy00:11:25 CFO Trust With Boards and Investors00:11:50 How CFOs Engage Investors When Hiring00:14:44 Building Strong CFO Investor Relationships00:16:18 Sharing Bad News Early00:17:21 CEO Vision Versus CFO Validation00:20:57 How AI Is Changing the CFO Role00:23:56 Incumbents Versus AI-Native Finance Tools00:26:24 CFOs Driving Internal AI Adoption00:28:07 AI Impact on Customer Support Efficiency00:29:26 Internal Leverage From AI Automation00:31:29 Why Investors Care About LTV to CAC00:34:00 LTV to CAC Across Business Models00:36:26 Retention Curves Matter More Than Growth00:38:16 Evaluating AI Gross Margins Long Term00:40:04 Recipe for AI Margin Expansion00:43:01 What Makes a Public-Ready CFO00:44:47 Beating Guidance Drives IPO Performance00:46:56 Growth Versus Profitability Has Rebalanced#RunTheNumbersPodcast #CFOLeadership #FintechInvesting #AISaaS #VentureCapital This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit cjgustafson.substack.com